package com.bite.interceptor;

import com.bite.constant.Constants;
import com.bite.model.Result;
import com.bite.model.UserInfo;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.HttpSession;
import lombok.extern.slf4j.Slf4j;
import lombok.val;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import java.nio.charset.StandardCharsets;

@Slf4j
@Component
public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        log.info("pre目标方法执行前");

        HttpSession session = request.getSession(false);
        if(!checkUser(session)){
            response.setContentType("text/html;charset=utf-8");
            response.setStatus(401);
            String msg = "用户未登录";
            response.getOutputStream().write(msg.getBytes("UTF-8"));
            return false;
        }
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        log.info("post");
    }
    public boolean checkUser(HttpSession session){
        if (session == null||session.getAttribute(Constants.SESSION_USER_KEY)==null){

            return false;
        }
        UserInfo userInfo = (UserInfo)session.getAttribute(Constants.SESSION_USER_KEY);
        if (userInfo==null || userInfo.getId()<=0){
            //用户未登录

            return false;
        }
        log.info("用户一登陆");
        return true;
    }
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        log.info("after");
    }
}
